As noted by BGPmon, Indosat has form for route announcement hijacks. In 2011 it made a similar mistake, announcing itself as originating “approximately 2800 new unique prefixes of 824 unique Autonomous systems, whereas normally they originate approximately 100 prefixes.”

Renesys posted a Tweet saying the global impact would be far less than the 320,000 prefixes: only 354 of the prefixes leaked by Indosat are seen globally, it said, with 104 of those belonging to Akamai.

While some erronious route announcements are deliberate – such as Turkey, where earlier this week ISPs announced Google's 8.8.8.8 DNS resolver as their own address to disrupt citizens' access to banned services like YouTube and Twitter – the Indosat hijack is more likely an egregious error. ®